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Annual Conference CLEAPSS Physics investigations Please ask if you are unsure or need help MONKEY AND HUNTER EXPERIMENT DRAFT The monkey and hunter experiment The monkey and hunter experiment is a very useful demonstration of projectile motion and the independence of horizontal and vertical vectors in Physics. It is typically demonstrated at AS Level Physics, but a discussion of it could be had with more able GCSE students, and it remains a popular experiment to show on Open Evenings. You will need • • • • • An 3-12V electromagnet A low voltage power supply Long 4mm leads, crocodile clips, aluminium foil A ‘monkey’ typically an iron or steel can Stomp air rocket, or a nerf gun which shoots soft foam projectiles Where should the hunter aim their gun in order to hit the monkey, should the monkey release their grip from the branch the moment the bullet leaves the gun’s barrel? This experiment relies on an electromagnet within a circuit, (which is holding up the ‘monkey’), which switches off when the bullet/projectile breaks the circuit upon being fired. DRAFT © CLEAPSS, The Gardiner Building, Brunel Science Park, Kingston Lane, Uxbridge UB8 3PQ Tel: 01895 251496; Fax: 01895 814372; E-mail: [email protected]; Web site: www.cleapss.org.uk
